Apparatus for generating steam and destroying and utilizing garbage, &amp;c.



No. 645,|3I. Patented Mar. l3, I900.

J. T. ROBBINS. V APPARATUS FOR GENERATING STEAM AND DESTROYING AND UTILIZING GARBAGE, 8L0.

(Application flledJ'une 29, 1891.) 7

(No Model.)

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Destroying and Utilizing Garbage, &c., of

I operating a furnace.

UNITED STATES PATENT @EEICE.

JOSEPH T. ROBBINS, OF NEWTON, IOWA.

APPARATUS FOR GENERATING STEAM AND DESTROYING AND UTILIZING GARBAGE, &c.

SPECIFICATION forming part of Letters Patent No. 645,131, dated March 13, 1900.

Application filed June 29,1891. Serial No. 397,769. (N0 model.)

To all whom, it may concern.-

Be it known that I, JOSEPH T. ROBBINS, M. D., a citizen of the United States of America, residing at Newton, in the county of Jasper and State of Iowa, have invented a new and useful Apparatus for Generating Steam and which the following is a specification.

My object is to provide a furnace adapted for burning bituminous coal, garbage, dead animals, night-soil, &c., without allowing offensive fumes to escape, to facilitate the removal and destruction of offensive waste matter in buildings, towns, and cities, to generate heat and steam, and to economize fuel in My invention consists in the arrangement, combination, and operation of a boiler, a series of boiler-tubes, two furnace-grates, two bridge-walls, a steam superheater and distributer, and a fuel-magazine, as hereinafter set forth, pointed out in the claims, and illustrated in the accompanying drawilngs, in which- Figure 1 is a vertical and longitudinal sectional view clearly showing the relative positions of the various parts, and Fig. 2 is a transverse sectional view on the line a: w indicated in Fig. 1.

A represents a grate located at the bottom and front portion of the complete furnace.

A is a door in the front wall, through which access is gained to the combustion-chamber above the grate A, and A is a door in the same wall leading to the ash-pit under the grate A.

A" is a door through which access is gained to the upper fire-chamber and upper grate.

B is a bridge-wall at the rear end of the grate A. It rises above the grate and extends upward and rearward. Its top is inclined.

B is a vertical extension on top of the wall B, preferably made of metal and adapted to support tubes and to deflect the products of combustion.

O is a horizontal boiler supported above the top of the bridge-wall in such a manner that the products of combustion rising from the grate and combustion-chamberin front of the bridge-wall will be directed by the bridgewall and its extension to envelop the boiler.

D and D are hollow frames or boiler sections fixed to the bottom and end portions of the boiler O.

D is a hollow frame or boiler-section fixed to the front wall of the furnace.

1 2 3 4 represent a series of tubes connected with the sections D, D, and D as required to establish communication with eachother and the boiler O and to circulate water and steam.

F are grate-bars fitted to the upper row of the tubes in such a manner that air can cir culate between the top surfaces of the tubes and the under surface of the grate-bars. For this purpose each bar in this second grate has a longitudinal groove g in its bottom and transverse grooves h intersecting the groove g.

J are perforated tubes extended through the front wall of the furnace and between the tubes of the sectional boiler to the rear por-' tion of the grate-bars F and perforated as required to convey and heat and distribute air and to mingle oxygen with the products of combustion between the two grates for the purpose of promoting combustion and increasing heat.

K is a second bridge-wall extending up from the hollow frame D and front portion of the boiler O to the roof of the furnace as required to direct the products of combustion from the fuel and chamber above the upper grate downward through the upper grate to mingle with the products of combustion rising from the lower grate and to envelop the series of tubes and boiler-sections 1 2 3 4 as they pass around the bottom of the hollow frame and boiler-section D and the deflector extending downward and up between the sections B and D to envelop the boiler O in passing around the boiler-section D toward the escape-flue L. A damper K in the wall K can be opened when the door A is to be opened to allow a direct backward draft.

M is a steam superheater and distributer connected with the boiler O in such a manner that it will discharge its contents downward over and through the fuel on the upper grate to aid in promoting combustion.

N is a fuel-magazine suspended from the roof of the furnace in such a manner that its contents can be discharged therefrom to lodge upon the upper grate. It has an air-tight 'cover and a pivoted bottom and a crank handle R connected therewith in such a manner that the bottom can be turned as required to dump fuel from the magazine to drop upon the upper grate.

In the practical operation of my invention I start fires on the lower and upper grates when the boiler is supplied with water. The fuel may be introduced through the doors in the front wall or through the fuel-magazine. When I wish to cremate and destroy garbage or other offensive and waste material, I place such matter in the magazine and then subject the matter therein to the heat that rises and envelops the magazine until it is dried and ready to be dumped upon the fuel and fire on the upper grate, where it will be charred and burned. Particles that fall through the upper grate will lodge on the lower grate, and the odors and fumes of the burning matter will be destroyed by the fire on the upper and lower grates. The hydrogen gas discharged and distributed from the steam-superheater M and the oxygen conveyed and heated by the tube J will unite with the products of combustion liberated from the carbonaceous substances on the grates and produce-a combustible gas which will burn readily and make an intense heat at a reduced expenditure of time, because the garbage and other offensive waste matter are utilized in producing heat and steam and consequently the quantity of coal and other valuable fuel consumed is reduced.

I claim as my invention- 1. In a furnace, a closed chamber, a grate in the bottom of the chamber, a magazine supported in the chamber and over the grate, a deflector extending downward at the rear end of the grate, a series of boiler-tubes under the grate, and asecond grate under the sectional boiler arranged and combined as and for the purposes stated.

2. In a furnace, a horizontal grate at the bottom and front portion of a furnace-wall, a series of boiler-tubes supported above said grate, a second grate supported over the said boiler-tubes, a closed chamber above the said upper grate, and an air superheater and distributer under the upper grate, arranged and combined to operate in the manner set forth for the purposes stated.

' 3. In a furnace, a horizontal grate at the bottom and front portion of a furnace-Wall, a series of boiler-tubes supported above said grate, a second grate supported over the said boiler-tubes and a closed chamber above the said upper grate, an air-superheater under said upper grate, and a steam snperheater and distributor above the upper grate, ar"

ranged and combined to operate in the manner set forth for the purposes stated. I

at. An apparatus for generatingsteam, and destroying and utilizing garbage, 860., comprising a furnace-wall, a grate extending rearward from the front and lower portion of the wall, a bridge at the rear end of the grate extending backward and upward therefrom, a series of boiler-tubes above the said grate and said bridge-wall, a second grate above the front portion of the said boiler-tubes, a closed chamber above the uppergrate,a magazine supported in said chamber and above the upper grate and a boiler in rear of said closed chamber communicating with the said boiler-tubes, a steam superheater and distributor above the upper grate and an air superheater and distributer under the upper grate, all arranged and combined to operate in the manner set forth for the purposes stated.

5. In an apparatus for generating steam and destroying and utilizing garbage, &c., a furnace-chamber having a grate in its bottom and closed above the grate to direct the products of combustion down through the grate, a magazine supported from the closed top of the chamber and over the grate and-provided with a cover and a pivoted bottom and means for operating the bottom, a deflector at the rear end of the grate, tubes for generating steam located under the grate and a second grate located under the said tubes, an opening inrear of the lower grate and under the deflector projecting down in rear of the upper grate for the rearward discharge of the products of combustion liberated from fuel on the two grates, and means for admitting air to the fuel on the grates, arranged and combined to operate in the manner set forth for the purposes stated.

6. In a furnace, a chamber having a grate situated near its center, a grate in its lower portion and an opening for the discharge of products of combustion in its rear wall between the two grates the upper grate having means for supplying air to support combustion thereat, and to permit of a downdraft therethrough and the lower grate having means for feeding air below the same so as to permit of an updraft of the air between the bars.

7. In adowndraft-furnace, the combination of an air conveyor, superheater and distributer with a grate and means for directing the products of combustion downward through the grate to mingle with the hot air distributed immediately under the grate by the said conveyer superheater and distributerlocated under the grate for the purposes stated.

JOSEPH T. ROBBINS. \Vitnesses:

E. 0. Odd, O. E. Born.

IIO 

